The most common grease seal for a 4,400 lb axle is the # 58846 with a 1.719" inner diameter and 2.565" outer diameter. This is the same grease seal used for most 3,500 lb axles as well. This fits a 4,400 lb hub and drum assembly like the Trailer Hub and Drum Assembly - 4,400-lb E-Z Lube Axles - 10" Diameter - 6 on 5-1/2 # 8-407-5UC3-EZ. view full answer...
The only thing I consistently pulled up with part number PBD 877-646-9233 was plastic pop-up vents. Here are the available options for your for a 2006 Forest River grey Wolf TT Toy Hauler :
Replacement Exterior Pop-Up Roof Vent-Black Steel Item # 9106
Replacement Exterior Pop-Up Roof Vent - Aluminum Item # RV-626-062
Redline 2-Way Pop-Up Roof Vent with Garnish Item # 9106-2756
Redline 2-Way Pop-Up Roof Vent with Garnish Item # RV-626-062-2756
Both are 13-1/2" x 8" and do not have to be... view full answer...